我的一个程序中有一个函数只在特定的机器上抛出错误。它在我的Windows机器上运行正常,但是当我在Linux机器上测试时,它会抛出一个超出范围的向量错误:
----------------------------------------------
FINDING LONGEST WORD CHAIN
----------------------------------------------
The longest chain(s) are:
terminate called after throwing an instance of 'std::out_of_range'
what(): vector::_M_range_check
Abort
这就是我的惯例:
void findLongestChain(vector<FlexArray<StringWrap>* >& chains) {
int max;
int maxIndex;
vector<int> v;
for(std::vector<int>::size_type i = 0; i != chains.size(); i++) { // iterate through vector
int chainSize = getChainSize(chains, i);
if(chainSize == max) { // just in case we have a tie
v.push_back(i);
}
else if(chainSize > max) { // we have found a larger word chain breaking any previous ties
max = chainSize;
maxIndex = i;
v.clear();
v.push_back(i);
}
}
cout << "----------------------------------------------" << endl;
cout << " FINDING LONGEST WORD CHAIN " << endl;
cout << "----------------------------------------------" << endl;
cout << "The longest chain(s) are: " << endl;
for(std::vector<int>::size_type i = 0; i < v.size(); i++) {
cout << " Chain #" << v[i] << ": " << getWordChain( chains, v[i] ) << endl;
}
cout << endl;
cout << "Each chain(s) contain " << getChainSize(chains, maxIndex) << " total words.";
}
无论如何,我以前从未见过这种情况。我想知道是否有人在不同的机器上有一些关于程序错误的一般提示/建议/经验,以及如何着手解决问题。
答案 0 :(得分:4)
以下几行可能是罪魁祸首。
int max;
int maxIndex;
变量未初始化。尝试将它们初始化为合理的东西,看看情况如何。